Answer:
20
Explanation:
when you first get the question it should look like this: 6/1.5 X/5
your gonna wanna cross multiply 6 and 5 then keep 1.5 and X like this: 1.5x
After that, it should look like this 1.5x=30
Now your gonna wanna divide 30 and 1.5 which you will get is 20
X=20. Hoped this helps!
(btw 1 1/2 is 1.5)
Remember this: height/shadow, if you ever get one of these again.